JPS5836176B2 - Slow cooling operation device when internal combustion engine is stopped - Google Patents

Slow cooling operation device when internal combustion engine is stopped

Info

Publication number
JPS5836176B2
JPS5836176B2 JP52018401A JP1840177A JPS5836176B2 JP S5836176 B2 JPS5836176 B2 JP S5836176B2 JP 52018401 A JP52018401 A JP 52018401A JP 1840177 A JP1840177 A JP 1840177A JP S5836176 B2 JPS5836176 B2 JP S5836176B2
Authority
JP
Japan
Prior art keywords
engine
temperature
cooling operation
stopped
slow cooling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP52018401A
Other languages
Japanese (ja)
Other versions
JPS53104032A (en
Inventor
健吾 奥山
範生 清水
益男 西山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP52018401A priority Critical patent/JPS5836176B2/en
Priority to US05/879,457 priority patent/US4192466A/en
Publication of JPS53104032A publication Critical patent/JPS53104032A/en
Publication of JPS5836176B2 publication Critical patent/JPS5836176B2/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors peculiar thereto
    • F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
    • F02M69/044—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the intake conduit downstream of an air throttle valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/08—Injectors peculiar thereto with means directly operating the valve needle specially for low-pressure fuel-injection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/06—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves being furnished at seated ends with pintle or plug shaped extensions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
    • F02M61/163—Means being injection-valves with helically or spirally shaped grooves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Description

【発明の詳細な説明】 内燃機関においては、全負荷運転から急に停止せしめた
場合に冷却水及び潤滑油の供給も同時に停止せしめられ
るため、特に燃焼室周辺の温度が急激に上昇し、これを
繰り返すことによりシリンダライナやシリンダヘッドの
熱疲労等の種々の弊害を生じるのである。[Detailed Description of the Invention] In an internal combustion engine, when full load operation is suddenly stopped, the supply of cooling water and lubricating oil is also stopped at the same time, so the temperature especially around the combustion chamber rises rapidly. Repeating this process causes various problems such as thermal fatigue of the cylinder liner and cylinder head.

これに対しては機関を停止させる際に徐冷運転即ち機関
温度を低下させるための無負荷運転を行い、各部の温度
が十分低下した後に機関を停止させることが行われるが
、従来においては上記徐冷運転を行う時間をタイマーに
より画一的に設定していたため、外部温度等の関係で機
関温度が十分低下していないにも拘らず停止させて上記
弊害を来たし、或は必要以上に長時間の徐冷運転を行っ
て燃料を浪費する等の弊害を来たしていたのである。To deal with this, when stopping the engine, a gradual cooling operation, that is, a no-load operation is performed to lower the engine temperature, and the engine is stopped after the temperature of each part has decreased sufficiently. Because the time for slow cooling operation was uniformly set using a timer, the engine was stopped even though the engine temperature had not sufficiently decreased due to external temperature, etc., causing the above-mentioned problems, or the slow cooling operation was continued for an unnecessarily long time. This caused problems such as wasting fuel due to slow cooling operation.

本発明はかかる実情に鑑みてなされた内燃機関の停止時
における徐冷運転装置に関するものであり、機関停止命
令により負荷遮断装置が作動するようになすと共に、該
命令により閉じる接点及び機関温度が一定値に低下した
際に閉じる温度リレーの接点を有し、且つ両接点の閉時
に機関停止装置が作動するようにした電気回路を設ける
ことにより、上記命令により負荷が遮断された後、徐冷
運転を機関温度が一定値に低下するまで行うようになし
、これにより外部温度等に拘らず常に最適の徐冷運転を
行って上記熱疲労等の弊害を確実に防止せしめ、また燃
料を浪費するといったことを無からしめるものである。The present invention relates to a slow cooling operation device for an internal combustion engine when it is stopped, which was made in view of the above circumstances, and in which a load shedding device is activated by an engine stop command, and the contacts that are closed by the command and the engine temperature are kept constant. By installing an electrical circuit that has a temperature relay contact that closes when the temperature drops to a certain value, and that activates the engine stop device when both contacts close, slow cooling operation can be performed after the load is cut off by the above command. This is done until the engine temperature drops to a certain value, and as a result, optimal slow cooling operation is always performed regardless of the external temperature, etc., to reliably prevent the above-mentioned adverse effects such as thermal fatigue, and to avoid wasting fuel. It is something that makes things clear from nothing.

以下、該装置の実施例を図に示す電気回路によって説明
すると、第１図において１は別途装備された負荷遮断装
置を作動せしめる機関停止命令により閉じる接点、２，
３は機関温度を検知するものとして冷却系統及び潤滑系
統にそれぞれ設置された各温度リレーの接点で、上記接
点１に直列として設置され且つ冷却水温度、潤滑油温度
が一定値に低下した際にそれぞれ閉じるようになされて
いる。Hereinafter, an embodiment of the device will be explained using an electric circuit shown in the drawings. In FIG. 1, 1 is a contact that is closed by an engine stop command that activates a separately equipped load shedding device; 2;
3 is a contact point of each temperature relay installed in the cooling system and lubrication system to detect the engine temperature, and is installed in series with the above contact point 1, and when the cooling water temperature and lubricating oil temperature drop to a certain value. Each is designed to close.

４は上記各接点１，２．３の閉時に通電され、設定時間
の経過時に接点４ａを開くタイマー５は上記接点１，２
．３及び該タイマーの接点４ａの閉時に通電されて接点
５ａを閉じるリレー６は該リレーの接点５ａの閉時に通
電されて接点６ａを閉じるリレーである。4 is energized when each of the contacts 1, 2.3 is closed, and a timer 5 that opens the contact 4a when the set time has elapsed is connected to the contacts 1, 2.
．． 3 and a relay 6 that is energized to close the contact 5a when the contact 4a of the timer is closed is a relay that is energized to close the contact 6a when the contact 5a of the relay is closed.

７は作動時に燃料ポンプの吐出量調節ラック（図示せず
）を強制的に燃料遮断位置に移動せしめる停止ソレノイ
ドで、上記リレーの接点６ａの閉時に作動せしめられる
ようになされている。Reference numeral 7 denotes a stop solenoid that forcibly moves a fuel pump discharge rate adjusting rack (not shown) to a fuel cutoff position when activated, and is activated when the contact 6a of the relay is closed.

ここで該ソレノイドは作動時に機関を停止せしめる他の
装置であってもよい。Here, the solenoid may be any other device that stops the engine when activated.

８は上記接点１に並列に設置された手動の停止スイッチ
、９，１０はそれぞれ上記接点１，２．３に並列に設置
された緊急時の手動停止スイッチ及び故障時の自動停止
スイッチである。Reference numeral 8 denotes a manual stop switch installed in parallel to the contact 1, and 9 and 10 denote an emergency manual stop switch and an automatic stop switch in case of a failure, installed in parallel to the contacts 1, 2.3, respectively.

上記の構或によれば、機関運転中に停止命令が発せられ
ると、図示しない負荷遮断装置が作動して機関の負荷が
解除せしめられると同時に、電気回路における接点１が
閉じるのであるが、その時点においては機関はそれまで
高負荷で運転されていたので高温状態にあることにより
温度リレーの接点２，３が開いた状態にあり、従ってタ
イマー４、リレー５，６及び停止ソレノイド７は作動せ
ず、機関は無負荷状態での徐冷運転が行われることにな
るのである。According to the above structure, when a stop command is issued while the engine is running, a load shedding device (not shown) is activated to release the load on the engine, and at the same time, contact 1 in the electric circuit is closed. At this point, the engine had been operating under high load and was in a high temperature state, so contacts 2 and 3 of the temperature relay were open, so timer 4, relays 5 and 6, and stop solenoid 7 were not activated. First, the engine will undergo slow cooling operation in a no-load state.

然して徐冷運転により機関温度が一定値即ち停止させて
もよい程度まで低下した際には、これを各温度リレーが
冷却水温度及び潤滑油温度の低下により検知して電気回
路における接点２，３を閉じることにより、タイマー４
が刻時を開始すると同時に、リレー５が通電せしめられ
て接点５ａが閉じ、これに伴ってリレー６が通電せしめ
られて接点６ａが閉じ、これにより停止ソレノイド７が
作動して図示しない燃料ポンプの吐出を遮断することに
より機関は停止せしめられるのである。However, when the engine temperature drops to a certain value due to slow cooling operation, that is, to a level that can be stopped, each temperature relay detects this by the drop in cooling water temperature and lubricating oil temperature, and contacts 2 and 3 in the electric circuit. By closing Timer 4
At the same time as starts clocking, the relay 5 is energized and the contact 5a is closed, and accordingly the relay 6 is energized and the contact 6a is closed, which activates the stop solenoid 7 and starts the operation of the fuel pump (not shown). By cutting off the discharge, the engine is stopped.

然る後上記タイマー４の設定時間が経過すれば、接点４
ａが開くことによりリレー５，６及びソレノイド７の作
動が終了せしめられ、該ソレノイドが長時間の通電によ
り焼損することが防止せしめられるのである。After that, when the set time of the timer 4 has elapsed, the contact 4
By opening a, the operation of the relays 5, 6 and the solenoid 7 is terminated, and the solenoid is prevented from burning out due to long-term energization.

ここで該実施例においては、手動の停止スイッチ８の投
入により何時でも徐冷運転の後に機関を停止させること
ができ、また同じく手動の停止スイッチ９を投入すれば
緊急事態の発生時等に徐冷運転をすることなく機関を停
止さセることかでき、更に適宜故障感知装置と停止スイ
ッチ１０を連動せしめれば故障発生時に直ちに機関を停
止せしめることができるようになされている。In this embodiment, the engine can be stopped after slow cooling operation at any time by turning on the manual stop switch 8, and if the manual stop switch 9 is also turned on, the engine can be stopped in the event of an emergency. The engine can be stopped without performing cold operation, and if the failure detection device and stop switch 10 are appropriately linked, the engine can be stopped immediately when a failure occurs.

尚、上記の実施例は機関温度の低下を冷却水温度及び潤
滑油温度の両者が一定値に低下することにより検知する
構或であるが、いずれか一方が一定値まで低下すれば機
関を停止させても支障がないときは、第２図に示す電気
回路のように各温度リレーの接点１２．１３を並列に設
置すればよく、また冷却水温度又は潤滑油温度のいずれ
か一方の温度だけで機関の停止時期を判断できるときは
、第３図に示すようにその温度を検知する温度リレーの
接点２２たけを設置すればよい。The above embodiment is configured to detect a decrease in engine temperature when both the cooling water temperature and the lubricating oil temperature fall to a certain value, but if either of them falls to a certain value, the engine is stopped. If there is no problem even if the temperature is lowered, it is sufficient to install the contacts 12 and 13 of each temperature relay in parallel as shown in the electric circuit shown in Figure 2, and only the temperature of either the cooling water or the lubricating oil can be set. When it is possible to determine when to stop the engine, it is sufficient to install only 22 contacts of a temperature relay to detect the temperature, as shown in FIG.

以上のように本発明は、適宜機関停止装置及び負荷遮断
装置を装備して機関停止命令により負荷遮断装置が作動
するようになすと共に、該命令により閉じる接点及び機
関温度が一定値に低下した際に閉じる温度リレーの接点
を有し、且つ両接点の閉時に上記機関停止装置を作動せ
しめる電気回路を設ける構戒としたことにより、機関を
停止させる際に先づ負荷が解除されて徐冷運転が行われ
ると共に、該徐冷運転が機関温度が一定値に低下するま
で行われるようになり、これにより外部温度等に拘らず
常に最適の徐冷運転が行われ、従来における徐冷運転時
間をタイマーで画一的に設定していた場合に比較してよ
り確実にシリンダライナやシリンダヘッドの熱疲労等の
弊害が防止せしめられ、また燃料を浪費するといったこ
とが皆無とされる効果を奏するのである。As described above, the present invention is equipped with an engine stop device and a load shedding device as appropriate, so that the load shedding device is activated by an engine stop command, and when a contact is closed by the command and the engine temperature drops to a certain value. By having a temperature relay contact that closes when both contacts are closed, and an electric circuit that activates the engine stop device when both contacts are closed, the load is first released when the engine is stopped, and slow cooling operation is started. At the same time, the slow cooling operation is now carried out until the engine temperature drops to a certain value, and as a result, the optimum slow cooling operation is always performed regardless of the external temperature, etc., and the slow cooling operation time that was conventional Compared to the case where the timer is set uniformly, adverse effects such as thermal fatigue of the cylinder liner and cylinder head can be more reliably prevented, and there is no wastage of fuel. be.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明実施例の電気回路図、第２，３図はそれ
ぞれ他の実施例の一部省略電気回路図である。 １は接点、２，３，１２，１３，２２は温度リレーの接
点、４はタイマー ５，６はリレー ７は停止ソレノイ
ド。FIG. 1 is an electrical circuit diagram of an embodiment of the present invention, and FIGS. 2 and 3 are partially omitted electrical circuit diagrams of other embodiments. 1 is a contact, 2, 3, 12, 13, and 22 are temperature relay contacts, 4 is a timer, 5 and 6 are relays, and 7 is a stop solenoid.

Claims (1)

【特許請求の範囲】[Claims] １ 適宜機関停止装置及び負荷遮断装置を装備して機関
停止命令により負荷遮断装置が作動するようになすと共
に、該命令により閉じる接点及び機関温度が一定値に低
下した際に閉じる温度リレーの接点を有し、且つ両接点
の閉時に上記機関停止装置を作動せしめる電気回路を設
けたことを特徴とする内燃機関の停止時における徐冷運
転装置。1. Equip the engine stop device and load shedding device as appropriate so that the load shedding device is activated by the engine stop command, and also set the contact that closes in response to the command and the contact of the temperature relay that closes when the engine temperature drops to a certain value. 1. A slow cooling operation device for stopping an internal combustion engine, characterized in that the above-mentioned electric circuit is provided to operate the engine stopping device when both contacts are closed.
JP52018401A 1977-02-21 1977-02-21 Slow cooling operation device when internal combustion engine is stopped Expired JPS5836176B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP52018401A JPS5836176B2 (en) 1977-02-21 1977-02-21 Slow cooling operation device when internal combustion engine is stopped
US05/879,457 US4192466A (en) 1977-02-21 1978-02-21 Swirl injection valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52018401A JPS5836176B2 (en) 1977-02-21 1977-02-21 Slow cooling operation device when internal combustion engine is stopped

Publications (2)

Publication Number Publication Date
JPS53104032A JPS53104032A (en) 1978-09-09
JPS5836176B2 true JPS5836176B2 (en) 1983-08-08

Family

ID=11970651

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52018401A Expired JPS5836176B2 (en) 1977-02-21 1977-02-21 Slow cooling operation device when internal combustion engine is stopped

Country Status (2)

Country Link
US (1) US4192466A (en)
JP (1) JPS5836176B2 (en)

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JPS5320606B2 (en) * 1971-11-17 1978-06-28
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JPS6036270U (en) * 1983-08-22 1985-03-13 株式会社　クリエイティブ・ブティック　１２０パ−セント emergency card

Also Published As

Publication number Publication date
US4192466A (en) 1980-03-11
JPS53104032A (en) 1978-09-09

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